How to Use reFlutter for Extracting Dart Code from APKs 🛠️

ReFlutter is a handy tool that allows you to reverse engineer Flutter apps and extract Dart code, monitor network trafic from APKs. Here’s a step-by-step guide on how to use reFlutter:

1. Installation 🖥️

First, you need to install reFlutter. Open your terminal and run the following command:

pip3 install reflutter==0.7.8

This will install the reFlutter tool on your system.

2. Android Setup via Termux 📲

For Android users using Termux, follow these steps:

1. Open a New Terminal:

   • In Termux, open a new terminal session.

2. Get Your IP Address:

   • Type ifconfig and hit enter.
   • Copy the IP address of the currently active connection.

3. Run reFlutter:

   • In a fresh terminal, type:

        reflutter <path_to_your_apk>
     

   • Press enter.

4. Choose Option 2:

   • reFlutter will prompt you with two options. Select option 2 and hit enter.

5. Enter IP Address:

   • Paste the IP address you copied earlier and press enter.

6. APK Generation:

   • reFlutter will generate an APK named release.RE.apk.

3. Signing the APK 📝

To sign the APK:

• Use MT Manager (an Android file manager with powerful editing features) to sign the APK.
• Or, You can also use uber-apk-signer to sign the APK.

4. Install and Run the APK 🚀

Once the APK is signed:

• Install it on your Android device.
• Run the app.

5. Finding the Dump File 🔍

Root Users:

• Go to /data/data/<package_name_of_app>/.
• You’ll find the dump.dart file here.

Non-Root Users:

• Using PC:

  • Open a terminal and run:

        adb -d shell "cat /data/data/<package_name_of_app>/dump.dart" > dump.dart
    

• Using Android (MT Manager):

  • Use the inject document provider function in MT Manager to access the dump.dart file.

Conclusion 🎯

With these steps, you can successfully use reFlutter to extract Dart code from Flutter apps. Whether you’re a root user or not, this guide has got you covered!

Happy reversing! 🔧💻